Dump wagon



May 24, 1949. S ITH 2,471,379

DUMP WAGON- Filed Aug. 51, 1946 3 Sheets-Sheet l I "I'm/tar L. W. SMITH ,May 24, 1949.

DUMP WAGON 3 Sheets-Sheet 2 Filed Aug. 31, 1946 lure/Ito)" laua'eft. Jail IV)- L. W. SMITH May 24, 1949.

DUMP WAGON '3 Sheets-Sheet 3 Filed Aug. 31, 1946 Patented May 24, 1949 UNITED STATES PATENT ()F'FICE DUMP WAGON Louie W. Smith, Fort DodgeJoWa, Application August 31, 1946', SeriahNoaGQQZ-lll 6 Claims. (01. 298-17) My invention relates to improvements in dump wagons, the primary object in view being to provide, in a wagon equipped with front and rear wheels, for lowering the rear end of the body substantially to the ground to incline the same downwardly and rearwardly, and for simultaneously swinging the body upwardly and rearwardly to incline the same downwardly and rearwardly at a greater angle thancanbe obtained by lowering the rear end, all to the end that the body may be inclined for dumping at a greater angle to the horizontal than in dump wagons of the four wheeled type as commonly constructed.

Other and subordinate objects, also comprehended by my invention, together with the precise nature of my improvements will be readily understood when the-succeeding description and claims are read with reference to the drawings accompanying and forming part of this specification.

In said drawings, 7

Figure l is a viewin side elevation of my improved dump wagon, in a preferred embodiment thereof.

Figure 2 is a similar view withtheparts shown in'the position assumed by the same when the wagon is partly dumped.

Figure 3 is a View in bottomnplan.

Figure 4 is a view in, transverse section taken on the line 44 of Figure 1.

Figure 5 is, a similar view taken on the line 5-5 of Figure Land Figure 6 is a fragmentary view in perspective of the steering gear for the front wheels.

Reference being had to the drawings by numerals, my improved dump Wagon, as shown, comprises, as the basic elements thereof, a body I, a body supporting frame 2, and front and rear ground wheels 3, 4 supporting the frame 2 and mounted as presently described.

The body I is of the usual box type and is hinged, at its rear end, as at 4' on the rear end of'the frame 2 for vertical swinging on said frame upwardly and rearwardly. Wear plates 5 are provided on the bottom of the body I adjacent oposite sides thereof and forwardly of the transverse center of said body; for a purpose presently clear.

The frame 2- is of rectangular form and onepiece construction with side bars 6' and front and rear end bars 1, 8 all preferably of angle iron construction; A front transverse bumper bar 9'is providedonthe-frame2 and which provides a rest for thefront end'of the body! in the normaipositioh or the body.

' 6, as at, 16} S'teeringar-ms side bars; 6.- ofrthe'frame; 2,-

The front ground wheels iarer steering wheels, rotatable onspindles, as, at; ill, of: the usual automobile steering knuckles H on: the lower ends of a pair ofuprightiposts li s depending from the adiaeen't to the front end of said frame; and which are preferably formed integrally withsaid side; bars 6. Front and roan diagonal, brace bars, l3, l4 extend between the post, [#25 and the side ba-rs fi and are fixed to the posts l2, as-at I5, andztothe side bars I! extend rearwardly from thesteering kniickles.H, in theusualmanner, withthe'usual' connecting cross bar Hlpivoted to the rear ends thereof, asat I 9. A bar 293 for attaching, a, tongue not shown, to the wagon is pivoted intermediate. itsends, asatil, on a forwardly. extending'luglion the front bar I with a dependingan'gnlar' endfpoition; 23 in the rear ofv thepivot Tl, swingabiy connected. tothe cross bar I 8 by aboltfl entendmg through alongitudinal s1ot25l i sam-porhonn. As will be clear, the bar. 20, a ranged. to be swung sidewise by a tonguehnottshownl,tooperate the cross bar l8 endwiseand,,through the steering arms [1, turn. the frontwheeh 3516i steering.

The rear; ground, wheels "4. are mounted on spindles. as atfd'onthe, freeend'sof a pair of link bars Upiifotedf at; the othei ends thereof, as at 28; in pairs;'of:;ea'rs ,2 depending from'the side bars 6; the, arrahg'eiiintbing,siichthat. said link bars 21' are swingahie-forwamiy and rear- Wardly of the frame 'i; A, cross b'ar3II' connects the link harszradjacent tot'he free ends thereof for swinging or saidlink bars 21" in unison.

Means'are providedffor swinging the link bars 27;, as follows. A transverse" shaft 3'! is journalie'd-in the side bars 'fforwardly of the pivots 28 with a crank 3'2 on one end-thereof and a pair of spirally grooved'pulleyses fast thereon adjacent the side. bars sonthe outer sides thereof. A second-transverse shaft 3"4 is journalled in said side bars 66 in therearofthe pivots 28 with a pair ofpuIIeys-fifiast; on, the, ends 'thereof and aligned with'the pulleys; 331;, A. air ofc'ables as are wound-intermediate the ends thereof on the pulleys 33, and traihedzover the pulleys 35with ends connected; toteais 31 on, the front: andrear sides ofthe'lin'k bars 27. Alok for the described means is, providedrih ,theform of a screw shaft 38'turned thron ha late'i'alllugiafl on one side bar Sof frame; ZWith ahead. 40'. on one end thereofadapte'drto be tiuustagainst ot'lplllley .33 by turning/of said shaft-,ahaia crank on the other, endfthere'of 1' for. turhi g the shaft.

As will nowbe by'iotatihg the pulleys 331 in one direction, through the medium of the crank 32 and shaft 3|, the pair of cables 36 will be operated to swing the link bars 21 forwardly, together with the wheels 4, and thereby lower the rear end of the frame 2 and the body I about the axis of the spindles I so that said frame and body are inclined downwardly and rearwardly as shown, for instance, in Figure 2 which illustrates a partly lowered position. of said frame and body. Conversely, by rotating the pulleys 33 in the opposite direction, the pair of cables 36 may be operated to swing the link bars 21 rearwardly into substantially vertical position in which the frame 2 and body I will be swung upwardly about the axis of the spindles l8 into substantially horizontal normal position. By operating the shaft 38 to lock the one pulley 33, in the manner already described, the link bars 21 and wheels 4 may be maintained in any position in which the same are swung to maintain the frame 2 and body 1 in the corresponding position.

It is a particular feature of my invention, that swinging of the link bars 21 is utilized to swing the body I upwardly and downwardly on the hinges 4 into different angular positions relative to the frame 2, or, into a position parallel to said frame when said body is in normal position. For this purpose, a pair of bars 43 are pivoted at rear ends thereof, as at 44, to ears 45 on the link bars 21 adjacent to the free ends of said bars 21, the bars 43 extending forwardly from said ears 45 with front ends pivoted, as 'at 46, to the lower ends of crank-like rockers 41 pivoted intermediate the ends thereof, as at 48 on the side bars 6 with the upper ends thereof in wiping engagement with the aforementioned wear plates 5. The bars 43 and rockers 41 are so arranged that when the link bars 21 are swung forwardly, the rockers are swung in one direction, clockwise as viewed in Figures 1 and 2, to swing the body I upwardly on the hinges 4', and when said link bars 21 are swung rearwardly, said rockers 41 are swung counterclockwise to permit the body I to swung downwardly, under the influence of gravity, on the hinges 4. As shown in Figure 1, when the link bars 21 are in vertical position, and the frame 2 substantially horizontal, the rockers 41 are swung into a limit of movement in a counterclockwise direction permitting the body to swing downwardly onto thebumper bar 9 into substantially horizontal position.

To brace the link bars 21 against twisting sidewise, a telescopic reach rod 48 is provided to extend between the bar 30 and a similar cross bar 49 connecting the posts 12 adjacent to the lower ends of the same. The reach rod 48 comprises a pair of relatively slidable sections 58, the section 5| being pivoted, as at 52 between a pair of central ears 53 on the cross bar 30 and the section 5i being similarly pivoted as at 54, between ears 55 on the cross bar 43. A pin 56 is provided for insertion through suitable openings, not shown, in the sections 50, 5| to prevent the same from telescoping when the link bars are swung into vertical position and frame 2 and body I are in substantially horizontal position. As will be clear, the pin 56 is designed to be removed before the link bars 21 are swung forwardly from vertical position and to permit the sections 58, 5| to telescope during such swinging of said link bars 21.

It will now be clear that, by virtue of the described means for swinging the link bars 21 and rear wheels 4, the frame 2 may be swung downwardly upon the axis of the spindles [0 until the rear end of the frame, is substantially on the ground. At the same time, through the medium of the link bars 21, bars 43 and rockers 41, the body I will be swung upwardly on the hinges 4' into a position in which it is inclined downwardly and rearwardly at a greater angle to the horizontal than the frame 2. The advantage of this is, providing for swinging of the body 1 into a sharply inclined dumping position with its rear end close to the ground, or to any other surface upon which it is desired to dump the wagon.

The foregoing will, it is believed, sufiice to impart a clear understanding of my invention, since the operation thereof has been set forth in connection with the description of the parts.

Manifestly, modifications of the invention may be resorted to, without departing from the inventive concept, and right is herein reserved to such modifications, as fall within the scope of the appended claims.

What I claim is:

1. In a dump wagon including front and rear wheels, a frame supported at the front end thereof by the front wheels for swinging about the axis of said front wheels into downwardly and rearwardly inclined position to lower the rear end of the frame, means to mount the rear wheels on said frame for forward swinging thereon to permit said frame to swing into said position under the influence of gravity, a body hinged on said frame for swinging thereon into a downwardly and rearwardly inclined position, and. means operative by the means first mentioned to swing said body.

2. In a dump wagon including front and rear wheels, a frame supported at the front end thereof by the front wheels for swinging about the axis of said front wheels into downwardly and rearwardly inclined position to lower the rear end of the frame, means to mount the rear wheels on said frame for forward swinging thereon to permit said frame to swing into said position under the infiuence of gravity, a body hinged on said frame for swinging thereon into a downwardly and rearwardly inclined position, means operative by the means first mentioned to swing said body, and locking means for the first mentioned means.

3. In a dump wagon including front and rear wheels, a frame supported at the front end thereof by the front wheels for swinging about the axis of said front wheels into downwardly and rearwardly inclined position to lower the rear end of the frame, means to mount the rear wheels on said frame for forward swinging thereon to permit said frame to swing into said position under the infiuence of gravity, a body hinged on said frame for swinging thereon into a downwardly and rearwardly inclined position, and means operative by the means first mentioned to swing said body, the means first mentioned comprising a pair of link bars pivoted on said frame at opposite sides thereof for swinging forwardly beneath the frame and having the rear wheels mounted thereon, and cable and pulley means for swinging said bars.

4. In a dump wagon including front and rear wheels, a frame supported at the front end thereof by the front wheels for swinging about the axis of said front wheels into downwardly and rearwardly inclined position to lower the rear end of the frame, means to mount the rear wheels on said frame for forward swinging thereon to permit said frame to swing into said position under the influence of gravity, a body hinged on said frame fo swinging thereon into a downwardly and rearwardly inclined position, and means operative by the means first mentioned to swing said body, the means first mentioned comprising a pair of link bars pivoted on said frame at opposite sides thereof for swinging forwardly beneath the frame and having the rear wheels mounted thereon, and cable and pulley means for swinging said bars, the second mentioned means comprising a pair of body engagin rockers on said frame, and operatin connections between said link bars and rockers.

5. In a dump wagon including front and rear wheels, a frame supported at the front end thereof by the front Wheels for swinging about the axis of said front wheels into downwardly and rearwardly inclined position to lower the rear end of the frame, means to mount the rear wheels on said frame for forward swinging thereon to permit said frame to swing into said position under the influence of gravity, a body hinged on said frame for swinging thereon into a downwardly and rearwardly inclined position, and means operative by the means first mentioned to swing said body, the means first mentioned comprising a pair of link bars pivoted on said frame at opposite sides thereof for swingin forwardly beneath the frame and having the rear wheels mounted thereon, and cable and pulley means for swinging said bars, the second mentioned means comprising a pair of body engaging rockers on said frame, and operating connections between said link bars and rockers, comprising bars pivoted at opposite ends thereof to said link bars and rockers.

6. In a dump Wagon including front and rear wheels, a frame supported at the front end thereof by the front wheels for swinging about the axis of said front wheels into downwardly and rearwardly inclined position to lower the rear end of the frame, means to mount the rear wheels on said frame for forward swinging thereon to permit said frame to swing into said position under the influence of gravity, a body hinged on said frame for swingin thereon into a downwardly and rearwardly inclined position, and means operative by the means first mentioned to swing said body, the means first mentioned comprising a pair of link bars pivoted on said frame at opposite sides thereof for swinging forwardly beneath the frame and having the rear wheels mounted thereon, and cable and pulley means for swinging said bars, the cables being wound intermediate the ends thereof on certain of the pulleys with ends connected to opposite sides of said link bars.

LOUIE W. SMITH.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,538,052 Mueller May 19, 1925 1,582,740 Fager Apr. 27, 1926 FOREIGN PATENTS Number Country Date 478,104 Germany Apr. 5, 1928 

